Orquid "Phoenix"

Orquid "Phoenix"

by ceinmart

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10
votes
1answer
1k views

How does Nikon measure “minimum focus distance” for Macro/Micro lenses?

This question is about Nikon SLR terminology. The answer could be different for non-SLR cameras, or for different maker. The "minimum focusing distance" in the spec — it's measured and listed between ...
3
votes
1answer
548 views

Does maximum aperture change with focus distance with the Canon 60mm f/2.8 macro lens?

This site says The Canon EF-S 60mm f/2.8 Macro USM Lens loses 1/2 stop at 1:5, 1 stop at 1:3, 1.5 stops at 1:1.5 and 2 stops at 1:1 (lifesize). Can anyone confirm that at 1:5 magnification, ...
2
votes
1answer
127 views

What lens is needed to change the minimal focus distance length of my camera?

Here is my problem, I Have a scientific camera, a Sony Block FCB-EH6500, which has an automatic focus. The minimum focus distance is 1 cm when completely zoomed out and 120 cm when fully zoomed in. ...
2
votes
1answer
315 views

How much does extending affect range of focusing distances?

It's well known that moving a lens away from imaging surface will decrease both minimum and maximum focusing distance. There are times when it would be good to know how much those distances will ...